Forged in Fire

Season 4, Episode 14

Episode Title: The Kachin Dao

Air Date: 2017-08-01

Overview:

Smiths must use steel from old nautical equipment to forge-weld their signature blades, while being forced to do it using a metal inlay technique; then, the two finalists have just five days to forge the Kachin Dao, a deadly headhunting sword.